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DR. SEAN WESLEY MARQUARDT PSY.D
NPI 1740645100
Psychologist - Clinical in Milwaukee, WI

Active since December 29, 2015PECOS EnrolledAccepts Medicare Assignment
5000 W NATIONAL AVE, ROOM 1252, MILWAUKEE, WI 53295(414) 384-2000 Get Directions Write a Review

NPPES record last updated: August 1, 2017. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Aug 1, 2017, Dec 29, 2015 (2 updates tracked since 2015).

About Dr. Sean Wesley Marquardt Psy.d NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. SEAN WESLEY MARQUARDT PSY.D (NPI 1740645100) is an individual clinical provider in Milwaukee, Wisconsin, licensed in Wisconsin (3487-57) and active in the NPI registry since December 2015. He is enrolled in Medicare PECOS and is a graduate of Other (2014).

NPPES Registry Identity

NPI1740645100
Entity TypeIndividualMale
Primary Taxonomy103TC0700X
Provider Legal NameDR. SEAN WESLEY MARQUARDTCredential: PSY.D
Location Address5000 W NATIONAL AVE, ROOM 1252Milwaukee, WI 53295-0001
Mailing Address5000 W National Ave, Room 1252Milwaukee, WI 53295-0001 · (414) 384-2000
Phone(414) 384-2000
Sole ProprietorNo
Medical School CMSOtherGraduated 2014
Enumeration DateDecember 29, 2015
Last NPPES UpdateAugust 1, 20172 updates tracked since enumeration
✔ NPI 1740645100 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code103TC0700X
License✔ Licensed in WI · 3487-57
Definition
A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.
5000 W NATIONAL AVE, Milwaukee, WI 53295
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Dean Health Plan, Network Health and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Sean Wesley Marquardt Psy.d is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3274880588
PECOS Enrollment IDI20180718000979
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Sean Marquardt reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Prohealth Medical Group Inc
6.1 mi
Family Medicine
13900 W NATIONAL AVE
New Berlin, WI 53151
  • Reassigned Medicare billing, Wisconsin enrollment
  • 528 clinicians in this Medicare group
NPI 1962543728 (262) 928-4500

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 53295 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$163.24 typical visit price
range $53.90 – $163.24
Typical copayment $40.81 (range $13.47 – $40.81)
Most-billed visit code 99205
Established Patient
$95.41 typical visit price
range $17.40 – $133.76
Typical copayment $23.85 (range $4.35 – $33.44)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. NATALIA SCHWARTZ PHARM.D, RPH
Pharmacist (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist)
5000 W NATIONAL AVE
MILWAUKEE, WI 53295
Milwaukee County (414) 384-2000
DR. ELENA V ROUKHADZE M.D.
Pathology (Anatomic Pathology & Clinical Pathology)
5000 W NATIONAL AVE
MILWAUKEE, WI 53295
Milwaukee County (414) 384-2000
DEPARTMENT OF VETERANS AFFAIRS CLEMENT J. ZABLOCKI MEDICAL CENTER
General Acute Care Hospital
5000 W NATIONAL AVE
MILWAUKEE, WI 53295
Milwaukee County (414) 384-2000
MEAGAN LISKA MSW
Social Worker (Clinical)
5000 W NATIONAL AVE
MILWAUKEE, WI 53295
Milwaukee County (414) 384-2000
MS. MICHELLE SEAVERS
Nurse Practitioner (Family)
5000 W NATIONAL AVE
MILWAUKEE, WI 53295
Milwaukee County (414) 384-2000
JERALEE BRIGGS PH.D.
Psychologist
5000 W NATIONAL AVE
MILWAUKEE, WI 53295
Milwaukee County (414) 384-2000
WILLIAM GRANT STOOKSBURY MD
Psychiatry & Neurology (Psychiatry)
5000 W NATIONAL AVE
MILWAUKEE, WI 53295
Milwaukee County (414) 384-2000
JURGITA GRONKOWSKI PMHNP
Nurse Practitioner (Psychiatric/Mental Health)
5000 W NATIONAL AVE
MILWAUKEE, WI 53295
Milwaukee County (414) 384-2000

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Sean Marquardt's NPI number?

The NPI number for Sean Marquardt is 1740645100. It was assigned to this individual provider in the NPPES registry on December 29, 2015.

Where is Sean Marquardt located?

Sean Marquardt practices at 5000 W National Ave Room 1252, Milwaukee, WI 53295. The listed phone number is (414) 384-2000.

What is Sean Marquardt's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

Is Sean Marquardt enrolled in Medicare?

Yes. Sean Marquardt is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Sean Marquardt's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Sean Marquardt reassigns Medicare benefits to Prohealth Medical Group Inc (New Berlin, WI). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Sean Marquardt's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Sean Marquardt accept?

Health plans from Anthem Blue Cross and Blue Shield, Dean Health Plan, Network Health and UnitedHealthcare list Sean Marquardt as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Sean Marquardt was last updated on August 1, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.